Squashed 'src/machinetalk/proto/' changes from f027568..fbff940

fbff940 machinetalk-protobuf: updated EMC status proto file
45ac570 machinetalk-protobuf: work on definition file for EMC status
0a963c1 types, object: support for HALgroup pin + param members
93c56f9 javascript: first cut at ProtoBuf.js generator
db04f80 haltalk, others: add ProtocolParameters submessage
119379a types.proto: add MT_ZMQ_SUBSCRIBE and MT_ZMQ_UNSUBSCRIBE
a3459ca types.proto: add MT_HALRCOMMAND_DESCRIPTION
05ea3aa Container: prune fields for RT usage

git-subtree-dir: src/machinetalk/proto
git-subtree-split: fbff940dce65907560f0aa4a8cd1292c92846990
Merge commit '1e92c819ceae71c6ea08cbc9a0a196c2816e42ff' into machinetalk-preview-2